The surface of cerebrum is increased by many gyri.大脑表面由脑回的增多而增大.The gyri are narrowed and the sulci widened toward to frontal pole.脑回变窄,脑沟向着前端变宽.A coronal section through the frontal lobes reveals extensive contusions in...
...the mournful dirge, 'Erin's Lament'.哀婉的乐曲，《爱尔兰挽歌》Captain, make sure that the band plays a dirge.上尉, 一定让乐队为他们演奏一首表达我们哀思的挽歌.She threw down her basket and intoned a peasant dirge.她撂下菜篮,唱起庄稼人的哀歌.The strange...
The first organisms that reproduced sexually were free-floating plankton.最早开始有性繁殖的生物是四处漂浮的浮游生物。The fish live on the plankton.这种鱼靠吃浮游生物为生。Plankton is at the bottom of the marine food chain.浮游生物处于海洋食物链的最底层....